Electronic Telegram No. 150
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVAE 2005bi AND 2005bu
     A. V. Filippenko, R. J. Foley, D. Pooley, and R. Chornock, University of
California, Berkeley, report that inspection of CCD spectra (range 320-930 nm),
obtained on May 11 UT with the Keck I 10-m telescope (+ LRIS), shows that
SN 2005bi (IAUC 8511) is of type II, perhaps 1.5-2 months after the explosion.
Lines of H I, Fe II, Ca II, and other species are present -- in most or all case
with well-developed P-Cyg profiles.  Spectra of SN 2005bu (IAUC 8519)
show it to be of type Ia, roughly 3-4 weeks past maximum brightness.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the formal IAU Circulars.

                         (C) Copyright 2005 CBAT
2005 May 11                      (CBET 150)               Daniel W. E. Green